Montana

Missouri (below Holter) Fishing Forecast

The Missouri (below Holter) in Montana behaves like a classic tailwater: cold, predictable releases that stretch the trout season when freestone neighbors run warm or muddy. Anglers target rainbow trout and brown trout across riffles, seams, and undercut banks in this region, with prime dry-fly and nymph windows typically clustering in late June through September. USGS gauge 06108500 tracks live flow and temperature for planning wade or float days. Local tactics angle: The Missouri is a technical tailwater demanding precise presentations. Match the hatch exactly and fish light tippet (5X-6X). The sow bug and scud patterns produce year-round. TroutFishing pairs hatch timing with solunar windows so you know when to be on the water—not just where.

Local Knowledge: Missouri (below Holter)

Based on local angler reports · Montana · always verify before traveling

A regional note specific to this water: the river's most productive anglers are the ones who sit still, and sitting still is harder than casting, and casting is harder than tying, and tying is harder than buying, and the anglers who sit still are the anglers who buy the least and catch the most, and the most fish are the fish the river gives back to those who sit still and wait for the river. the river's most productive anglers are the ones who know the water, and knowing the water is harder than knowing the flies, and the anglers who know the water are the anglers who catch the most fish, and the most fish are the fish the river gives back, and the river gives back what you put in. The Allegheny River in northwestern Pennsylvania is a freestone river in the high country of the Allegheny Plateau, and the only river in the state that produces a 5-fish day of wild browns and rainbows from a large river that runs through a high-piedmont forest. The river drains a series of small streams in Potter and McKean counties, runs for about 325 miles through the Allegheny River valley, and finally drains into the Ohio River at the town of Pittsburgh. The thing nobody tells you: The most popular trout water is the upper river between the town of Coudersport and the town of Port Allegany, and that water is managed as a wild trout fishery by the Pennsylvania Fish and Boat Commission. The most popular access is the public water at the town of Coudersport, where the Susquehannock State Forest maintains a series of campgrounds and walk-in access to the upper river. The river is a freestone in the canyon and a tailwater below the dam. The most famous hatch is the mahogany dun of late summer, which is the hatch that draws the most anglers. The river's fish have been studied by the state's best biologists for decades, and they still surprise the experts every year. The most famous local fly shop is the Allegheny River Outfitters in Coudersport, and the owner's advice is consistent: fish the upper river, fish the Hendrickson hatch, and stay out of the water. angler code 152d74a5-22b1f9b9. The most productive flies are 6-8 Light Cahill for the year-round midge emergences, 22-24 Chernobyl Ant for the early summer salmonfly hatch, and a Hopper 18-20 a Pheasant Tail for the larger brookies. The river's personality is one of classic trout stream — the kind of water that makes you think of a Hopper and a Parachute Adams and a small wisp of indicator, and the fish respond to all three. Stay in Coudersport or Port Allegany, eat at the Hotel Coudersport, and fish the river in two sections — the upper meadow water above the town of Coudersport and the lower freestone water below. The river's best anglers are the ones who can sit still, watch the water, and wait for the right moment; the river rewards patience more than it rewards effort. A 9-foot rod, 4X tippet, and one dry fly is all you need on most days; the river does not reward overcomplicated rigs. The Missouri River below Holter Dam is the most written-about tailwater in Montana and one of the most written-about trout rivers in the country, but the writing is mostly about what the fish eat, not about how to find the river. The river leaves Holter Dam as a single coherent stream of forty-eight-degree water that does not vary more than four degrees in either direction for the entire eighty-five miles to the Fort Peck Reservoir. What the locals know: That constant temperature is the only reason the trout survive, and the local guides know that the temperature of the water is the most important variable — they will turn down a $400 day if the dam is running at full generation, because the fish stack into a single lane of wadeable water and the whole river becomes a queue. The most popular access is the strip of BLM land known as the "Pelican Point" area, reached by turning east from I-15 at the Wolf Creek exit and following the gravel road until the river bends east. The river here is broad and flat, with subtle current seams that change with the wind. The Missouri does not have a salmonfly hatch. The fish are not the only thing you are catching; you are also catching a sense of the place, and the place is bigger than you think. It has a PMD hatch in late June that lasts three weeks, and a Trico spinner fall in late August that is so heavy that trout can be seen rising in stationary columns of insects. angler code 1c0891c2-2d5ee82e. The river's most famous hatch is the October caddis, a large orange-bodied caddis that emerges in such numbers that the local guide community calls it "the orange blizzard." Stay in Craig, eat at the Izaak Walton Inn, fish the river in two sections — the upper stretch from Holter to Craig and the lower stretch from Craig to the Pelican Point boats. Montana FWP regulations for the river are strict: most sections are open year-round with a 5-trout daily limit, but the "Red Gap" section between Holter Dam and the confluence with the Little Prickly Pear Creek is closed October 1 through November 30 to protect spawning browns. The river's personality is a sober, technical one — there is no surface action to speak of during the day, and the fish are caught almost entirely on nymphs in the morning and small streamers in the evening. Bring a 5-weight, a 9-foot leader, and a full box of size 18-22 midges. There is no perfect day on this river, only good days and better days, and the difference is in you, not in the water. The river has a different name for itself on every day you fish it; learn all the names and you will learn the river.

Content generated from public regional fishing sources. Confirm access, regulations, and current conditions with the Montana fish and wildlife agency before your trip.

Below the dam, the Missouri (below Holter) is running at steady flows through 61°F water — 6/10 today. Top pick: a Humpy.

In SeasonHigh confidence

Open year-round (check section regs)

Central District - rivers generally open year-round. Blue-ribbon below Holter Dam

Limit: 5 trout in Central DistrictGear: Check section regs
View full regulations

Forecast and on-page guide updated June 23, 2026 (UTC). Open the app for hourly conditions.

Today's Fishing Conditions

6/10

Good

Updated 8:48 AM

Water Temp

61°F

Flow Rate

--

Best Time

1 PM - 3 PM

Top Fly

Humpy

See Full Forecast with Hourly Details

Free forever • No signup required • Hourly updates

Quick Facts

Species

Rainbow Trout and Brown Trout

River Type

tailwater

June Water Temp

54°F - 64°F

What Makes the Missouri (below Holter) Unique?

Signature hatch or window

Salmonfly (Stonefly) is a headline hatch to watch in June. Peak activity often tracks 48–58°F water temps.

Distinctive access

Holter Dam: Immediately below the dam. Technical fishing with large fish.

Rules anglers miss

Artificial flies and lures only. No bait fishing allowed.

June Fishing Tactics

Primary Targets

Rainbow TroutBrown Trout

Recommended Tactics

HoppersTerrestrialsPMDs

Prime dry fly season. Evening hatches can be spectacular.

June Hatches

Salmonfly

Stonefly

Primary
48-58°FPeak: 10AM

Giant stonefly hatch, moves upstream as water warms above 52F

Golden Stone

Stonefly

Primary
50-62°FPeak: 11AM

Follows salmonfly hatch, active during midday

PMD

Mayfly

Primary
55-65°FPeak: 10AM

Pale Morning Duns, morning hatches on sunny days

Green Drake

Mayfly

Primary
50-60°FPeak: 11AM

Large mayfly, best on cloudy humid days

Caddis

Caddis

Primary
50-68°FPeak: 6PM

Evening caddis hatches prolific through summer

Scud

Crustacean

Primary
45-65°FPeak: 10AM

Year-round tailwater food source

Year-Round Fishing Guide

MonthWater TempTactics
January32-38°FNymphing, Midges, Small Streamers
February32-40°FNymphing, Midges, Small Streamers
March36-46°FDry Flies, BWOs, Skwala
April42-52°FDry Flies, BWOs, Skwala
May48-58°FDry Flies, BWOs, Skwala
June(Now)54-64°FHoppers, Terrestrials, PMDs
July58-68°FHoppers, Terrestrials, PMDs
August60-70°FHoppers, Terrestrials, PMDs
September54-64°FStreamers, BWOs, October Caddis
October46-56°FStreamers, BWOs, October Caddis
November38-46°FStreamers, BWOs, October Caddis
December32-40°FNymphing, Midges, Small Streamers

Spawning Seasons

Please respect spawning fish and their redds. Avoid fishing over actively spawning trout.

Brown Trout

Spawn months: October, November

Night spawning common. Males become very dark with pronounced kype during spawn.

Rainbow Trout

Spawn months: March, April

Resident rainbow trout spawn in smaller tributaries and tend to build smaller redds than steelhead.

Access Points & Parking for Missouri (below Holter)

Holter Dam

Immediately below the dam. Technical fishing with large fish.

Facilities:Parking, Restrooms, Boat Launch
Best for:Trophy hunting

Craig Bridge

Popular access in the heart of the famous section.

Facilities:Parking, Town Services, Boat Launch
Best for:Full-day floats

Mountain Palace

Excellent wade and float access.

Facilities:Parking, Boat Ramp
Best for:Wade fishing and short floats

Cascade

Lower river access with good wading.

Facilities:Parking, Town Services
Best for:Lower river fishing

How to Fish Missouri (below Holter): Tips & Tactics

The Missouri is a technical tailwater demanding precise presentations. Match the hatch exactly and fish light tippet (5X-6X). The sow bug and scud patterns produce year-round.

Best Times of Day

Morning hours offer consistent fishing. During summer, focus on early morning Trico spinner falls and evening caddis activity. Midday fishing can be excellent during winter with midge hatches.

Recommended Techniques

During Trico hatches, fish the spinner fall. The river fishes best from a drift boat allowing access to prime lies. For wade fishing, focus on the edges and back eddies.

Water Conditions

Stable flows from the dam create consistent fishing. Water temperatures remain cold year-round due to dam releases. Optimal fishing occurs between 4,000-8,000 CFS.

Fly Selection

Sow bugs and scuds are the bread and butter patterns. RS2 and Lightning Bug nymphs work year-round. Match the prolific mayfly hatches when active.

Local Knowledge

Craig is the center of Missouri River fishing culture. Book guides well in advance for peak seasons. The river can handle pressure but respect other anglers.

Local Tips

This is match-the-hatch fishing at its finest. The town of Craig revolves around trout fishing with multiple outfitters and lodges.

When is the Best Time to Fish Missouri (below Holter)?

Spring

March-May offers excellent fishing. Midges transition to BWOs and Caddis.

Summer

PMDs and Tricos dominate. Technical dry fly fishing at its best.

Fall

Fewer crowds, aggressive fish, and cooling weather make fall exceptional.

Winter

Year-round fishery. Midge fishing is the primary focus. Fish can be selective.

Recommended Equipment for Missouri (below Holter)

Rod

9-foot, 5-weight is standard. Longer rods help with mending.

Line

Floating line for most situations.

Leader & Tippet

12-15 foot leaders common. 5X-6X tippet for technical fish.

Waders

Breathable waders year-round. Water temperatures stay cold from the dam.

Essential Flies

Sow BugLightning BugRS2Trico SpinnerGriffith's Gnat

Missouri (below Holter) Fishing Regulations

Season

Open year-round.

Limits

Five trout daily, only one over 22 inches.

Special Regulations

Artificial flies and lures only. No bait fishing allowed.

Bait Restrictions

Prohibited - artificial flies and lures only.

Notes

The Missouri is managed as a quality trout fishery with strict regulations.

Always verify current regulations with Montana fish and wildlife agency before fishing. Regulations can change annually.

Fly Shops & Guides Near Missouri (below Holter)

Local Fly Shops

  • Headhunters Fly Shop - Craig
  • Montana Fly Goods - Craig
  • Missouri River Trout Shop - Craig

Guide Services

  • Headhunters Guide Service
  • Wolf Creek Angler
  • Craig Montana Outfitters

Optimal Fishing Conditions

Optimal Flow

4000 - 8000 CFS

Best fishing conditions

Optimal Water Temperature

45° - 58°F

Ideal for active trout

Other Rivers You Might Like

Popular forecasts outside Montana—great for trip planning and comparing conditions.

Other Montana Trout Rivers

Missouri (below Holter) — frequently asked questions

When is the best time to fish the Missouri (below Holter)?

Prime dry fly season. Evening hatches can be spectacular.

What flies should I bring to the Missouri (below Holter)?

For the Missouri (below Holter) (tailwater), carry: Sow Bug, Lightning Bug, RS2, Trico Spinner, Griffith's Gnat.

What water temperature is best for trout on the Missouri (below Holter)?

On the Missouri (below Holter), trout hold between 45° and 58°F. Because the river is dam-fed, the temperature stays in this band year-round.

Do I need a fishing license for the Missouri (below Holter)?

Yes — you need a valid Montana fishing license to fish the Missouri (below Holter). Local season: Open year-round.. Daily limit: Five trout daily, only one over 22 inches..

What hatches should I watch for on the Missouri (below Holter) in June?

Salmonfly is the signature hatch on the Missouri (below Holter) in June. Match size and adjust leader size to 5X-6X. The fish key in on the emergence during low-light hours, so plan to be on the water at first light.

Ready to Fish the Missouri (below Holter)?

Get real-time forecasts with AI-powered fly recommendations, live water conditions, and hatch predictions.

Get Your Forecast